we cracked our front crossbar going through some big surf... got hit by a clean up set

we bought a used front crossbar and installed it on the hobie.

our question: we want to put our swivel cam back on the crossbar but there's no existing holes on the new "old" crossbar. can we use self tapping screws to put the swivel cam and base back on the bar? the original had one rivet and 2 machine screws holding it on the crossbar.

can we screw right into the new crossbar with self tapping machine screws? or drill new holes?

Yes. Lay the swivel mount on the crossbar where you want to install it. Mark the holes on the crossbar with a pencil. Center punch the marks. Drill pilot holes for the screws. Install the plate and screws. Done.